31980393080 has 32 divisors (see below), whose sum is σ = 71983144800. Its totient is φ = 12787310976.

The previous prime is 31980393061. The next prime is 31980393097. The reversal of 31980393080 is 8039308913.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43595 + ... + 256634.

It is an arithmetic number, because the mean of its divisors is an integer number (2249473275).

Almost surely, 2^31980393080 is an apocalyptic number.

It is an amenable number.

31980393080 is an abundant number, since it is smaller than the sum of its proper divisors (40002751720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31980393080 is a wasteful number, since it uses less digits than its factorization.

31980393080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302903 (or 302899 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 31980393080 in words is "thirty-one billion, nine hundred eighty million, three hundred ninety-three thousand, eighty".